Home / 6,989.14-10,478.62-3,289.31

Finding the Fourth Proportional to 6,989.14, 10,478.62 and 3,289.31

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Solution

The fourth proportional to 6,989.14, 10,478.62 and 3,289.31 is: 4,931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.14 : 10,478.62 = 3,289.31 : x
  2. Step 2: Convert to fraction form
    6,989.14/10,478.62 = 3,289.31/x
  3. Step 3: Cross multiply
    6,989.14x = 10,478.62 × 3,289.31
  4. Step 4: Simplify right side
    6,989.14x = 34,467,402.06
  5. Step 5: Solve for x
    x = 34,467,402.06/6,989.14
  6. Step 6: Final answer
    x = 4,931.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.